String.internal_fin_head: def of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/string.bend as String
Lines 259-266 of bend-mathlib@0.8.1.0/string.bend: https://jend.leeeet.dev/read.txt?path=bend-mathlib@0.8.1.0/string.bend&start_line=259&end_line=266

import Base
import bend-mathlib@0.8.1.0/bool.bend as MBool

def internal_fin_head(ab: Bool, bb: Bool, c: Cmp, h: {Cmp.is_eq(Word.cmp.fin(ab, bb, c)) == True{} : Bool}) -> {ab == bb : Bool}:
  match c:
    case LT{}:
      Empty.absurd({ab == bb : Bool}, internal_false_ne_true(h))
    case EQ{}:
      MBool.eq_of_cmp_eq(ab, bb, h)
    case GT{}:
      Empty.absurd({ab == bb : Bool}, internal_false_ne_true(h))

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Cmp
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Cmp.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty.absurd
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.cmp.fin
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/bool.bend&name=eq_of_cmp_eq
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/string.bend&name=internal_false_ne_true